body {
    background-color: #f2f3f5;
    padding: 20px;
}

/* 设置标题区 */
.layui-card-header {
    display: flex;
    align-items: center;
    /*上下居中对齐*/
    justify-content: space-between;
    /*左右两端对齐*/
}

.layui-form {
    margin: 20px 20px 0 0;
}